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Vishay General Semiconductor - Diodes Division SM6T22AHE3_B/H
- Part No.:
- SM6T22AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T22AHE3_B/H.pdf
- Description:
- 600W,22V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,414
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Product details
Overview
SM6T22AHE3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 30.6 V maximum clamping voltage (VC) at 20 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the SM6T22AHE3_B/H datasheet, SM6T22AHE3_B/H pinout, SM6T22AHE3_B/H application, or SM6T22AHE3_B/H equivalent, key selection factors include its AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.32), 100 °C/W junction-to-ambient thermal resistance, and RoHS-compliant matte tin-plated leads solderable per J-STD-002.
Technical Context
The SM6T22AHE3_B/H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 20.9–23.1 V breakdown threshold. Its glass-passivated junction ensures stable leakage (<1 μA at 18.8 V) and repeatable clamping performance under repetitive transients.
Designed for surface-mount placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal, it delivers 600 W pulse power handling with low inductance and meets MSL Level 1 (260 °C reflow peak), supporting automated high-volume assembly in automotive and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA - defines precise overvoltage trip point for reliable circuit protection |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 30.6 V at 20.0 A (10/1000 μs) - clamping voltage limits downstream IC stress during surge events |
| PPPM | 600 W - peak transient energy absorption capability under standardized surge waveform |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| RθJA | 100 °C/W - thermal resistance determines required PCB copper area for sustained power dissipation |
| Leakage ID | <1.0 μA at VWM - ensures minimal standby current impact on low-power sensor circuits |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads; cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return path | Connected to ground or low-impedance reference plane; carries full surge current during clamping |
| Cathode | Avalanche breakdown node / protected line connection | Connected to sensitive signal line (e.g., CAN, LIN, sensor output); initiates clamping when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under temperature cycling and humidity stress |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes voltage overshoot during fast transients, improving protection margin for 24 V systems |
| MSL Level 1 compliance | Supports standard SMT reflow without moisture-related popcorn failure or delamination |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 3 surges without degradation |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ground to clamp negative transients and limit positive overvoltage. Use Value: Maintains signal integrity below 30.6 V during 20 A surges, preventing ADC saturation or op-amp latch-up in 5 V/12 V sensor interfaces. | Use Scenario: Safeguarding gate terminals of N-channel MOSFETs in BLDC motor controllers subjected to Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response clamping device connected between gate and source to suppress dv/dt-induced turn-on and gate oxide overstress. Use Value: Limits gate-source voltage to ≤30.6 V during 10/1000 μs transients, preserving MOSFET reliability without adding gate resistance delay. |
| Telecom Line Interface Protection | Consumer Power Supply Input Clamping |
Use Scenario: Shielding RS-485 transceiver inputs in outdoor telecom equipment from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary unidirectional TVS on differential bus lines referenced to local ground, coordinated with common-mode chokes. Use Value: Clamps common-mode transients to 30.6 V within nanoseconds, enabling compliance with ITU-T K.21 basic protection level. | Use Scenario: Secondary overvoltage protection on 24 V DC input rails of smart home hubs after primary fuse and MOV stages. IC Role / Device Role / Timing Role: Precision clamping element that activates only above 20.9 V, avoiding false triggering during normal ripple or startup overshoot. Use Value: Provides clean, repeatable 30.6 V clamping with <1 μA leakage, eliminating standby power loss while ensuring fail-safe shutdown at 24 V ±10 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W; SMA package (DO-214AC), larger RθJA = 125 °C/W | Not AEC-Q101 qualified; suitable for commercial-grade consumer power supplies, not automotive | Select SMAJ22A only if cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5SMC22A | Higher PPPM = 1500 W, same VBR, but larger SMC (DO-214AB) package; no AEC-Q101 option available | Used where higher energy absorption is needed (e.g., industrial AC input stages), but incompatible with space-constrained SMB layouts | Choose 1.5SMC22A only when board space allows SMC footprint and system requires >600 W pulse handling |
Compared with SMAJ22A and 1.5SMC22A, SM6T22AHE3_B/H uniquely combines AEC-Q101 qualification, SMB footprint compatibility, and 600 W pulse rating-making it optimal for automotive signal-line protection where reliability, size, and standardized surge immunity must coexist.
Availability
SM6T22AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial motor drives, telecom interface boards, and consumer power supply designs requiring stable component supply with guaranteed AEC-Q101 compliance and traceable sourcing.
Supply support for SM6T22AHE3_B/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SM6T Series is designed specifically for surface-mount transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 qualification are mandatory.
FAQ
What is the exact breakdown voltage range for SM6T22AHE3_B/H?
The SM6T22AHE3_B/H has a specified breakdown voltage VBR of 20.9 V minimum to 23.1 V maximum, measured at 1.0 mA test current per the Vishay datasheet (Doc. #88385, Rev. 09-Jan-2024). This range ensures consistent overvoltage triggering across production lots and temperature extremes, critical for predictable protection behavior in automotive ECUs where SM6T22AHE3_B/H is deployed.
Is SM6T22AHE3_B/H qualified for automotive use?
Yes, SM6T22AHE3_B/H is AEC-Q101 qualified, as confirmed by its "HE3" suffix and explicit note in the Vishay SM6T datasheet (page 1, "AEC-Q101 qualified available"). This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock-making SM6T22AHE3_B/H suitable for under-hood and chassis-mounted automotive electronics where reliability is non-negotiable.
What does the "_B/H" suffix mean in SM6T22AHE3_B/H?
The "_B/H" suffix in SM6T22AHE3_B/H indicates packaging configuration: "H" denotes 7-inch plastic tape-and-reel with 750 units per reel, and "B" specifies the revision code (document revision B). This matches Vishay's ordering information table (page 2), confirming SM6T22AHE3_B/H is a RoHS-compliant, AEC-Q101-qualified part supplied in standard SMT-compatible packaging for automated assembly lines.
What is the maximum clamping voltage of SM6T22AHE3_B/H under surge conditions?
The SM6T22AHE3_B/H has a maximum clamping voltage VC of 30.6 V at 20.0 A peak pulse current with a 10/1000 μs waveform, per the Electrical Characteristics table (page 2, Doc. #88385). This value defines the upper voltage limit imposed on protected circuits during surge events, directly determining whether downstream components like microcontrollers or transceivers remain within safe operating limits when SM6T22AHE3_B/H is active.
Does SM6T22AHE3_B/H have polarity marking, and how is it identified?
Yes, SM6T22AHE3_B/H is unidirectional and features a cathode band marking on the SMB (DO-214AA) package body, as stated in the Mechanical Data section (page 1). The band identifies the cathode terminal, which must be connected to the protected signal line; the anode connects to ground. This polarity is essential for correct operation-reversing SM6T22AHE3_B/H would disable its clamping function in normal circuit configurations.
SM6T22AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T22AHE3_B/H FAQ
1.How can I place an order for SM6T22AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T22AHE3_B/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SM6T22AHE3_B/H reliable?
The price and inventory of SM6T22AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T22AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T22AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T22AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T22AHE3_B/H?
SM6T22AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T22AHE3_B/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SM6T22AHE3_B/H?
For technical support, including SM6T22AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T22AHE3_B/H requirements.
6.How does Aetrix verify that SM6T22AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T22AHE3_B/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SM6T22AHE3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T22AHE3_B/H?
All SM6T22AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T22AHE3_B/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SM6T22AHE3_B/H part is unused and in its original packaging.
Return procedure for SM6T22AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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